| Broadcast area | Grand Rapids metropolitan area |
|---|---|
| Frequency | 1480 kHz |
| Branding | Smile FM |
| Programming | |
| Format | Contemporary Christian |
| Network | Smile FM |
| Ownership | |
| Owner |
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| History | |
First air date | December 11, 1954 (as WMAX) |
Former call signs |
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| Technical information[1] | |
Licensing authority | FCC |
| Facility ID | 24785 |
| Class | B |
| Power |
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| Translator(s) | 95.3 W237CZ (Grand Rapids) |
| Repeater(s) | 90.9 WSLI-FM (Belding) |
| Links | |
Public license information | |
| Website | smile.fm |
WSLI (1480 kHz) is a non-commercial, listener-supported AM radio station which serves the Grand Rapids metropolitan area. The station is licensed to Kentwood, Michigan, a Grand Rapids suburb. It simulcasts Smile FM's contemporary Christian music format with sister station WSLI-FM 90.9 MHz.
By day, WSLI is powered at 2,000 watts and uses a non-directional antenna. But to protect other stations on 1480 AM from interference, at night it uses a directional antenna with a four-tower array. It is unusual in that it increases its nighttime power to 5,000 watts. The towers are located at Kalamazoo Avenue and M-6. Programming is also heard on 120-watt FM translator W237CZ at 95.3 MHz in Grand Rapids.